Company patents
TSUBAKIMOTO CHAIN CO.
TSUBAKIMOTO CHAIN CO. surprisingly shows a significant shift in its patent strategy, with its dominant category, Couplings & Brakes (Mechanical), which represents 50.0% of its portfolio, experiencing a sharp decline of 65.4% so far in 2026 after consistent growth in prior years. This indicates a potential re-evaluation of core mechanical components, while other smaller categories like Pipes & Tubing, Refrigerators & Cold Storage, and Conveying & Handling have seen a complete cessation of patenting activity so far in 2026, suggesting a broad reprioritization away from these areas.
Patent Trend by Technology Area
Yearly patent publications since 2023
Product themes
Product-level themes inferred from filings since 2023, with category chips showing where each theme appears. Select a theme to filter the patents below.
144 US filings (since 2023) · 6 categories · 12 themes
Novel designs or control strategies for clutches, including one-way, centrifugal, or disconnect types, to manage torque transmission in powertrains and other mechanical systems.
Assemblies and components designed for reliable and efficient transfer of rotational or axial forces between mechanical parts, accommodating misalignment or specific motion profiles.
Designs and components for efficiently supplying, collecting, and managing lubricants (oil, grease) within gearboxes and transmissions to reduce friction, dissipate heat, and extend component operational life.
Systems and methods for efficient storage, retrieval, and sorting of items within warehouses, distribution centers, or manufacturing facilities, often involving vertical lifts, high-throughput sorters, or inventory management logic.
Self-contained or portable units designed for maintaining specific temperatures for food, beverages, or sensitive items during transport, often incorporating active cooling or smart monitoring features.
Novel configurations and materials for gears and drivetrain components, including specialized profiles, self-aligning features, damping elements, and complex gear train arrangements like planetary, cycloidal, or strain wave gearing.
Tubes, hoses, or ducts incorporating additional components or features beyond simple fluid conveyance, such as embedded electronics (sensors, heaters), structural reinforcement, or segregated compartments for cable routing.
Transmissions designed to provide a continuous range of gear ratios between fixed limits, often employing ball-planetary, toroidal, or belt-pulley mechanisms, and including their control systems for stable operation in various directions.
Connectors, seals, and tubing solutions specifically designed for pipes, ducts, or conduits that deviate from standard circular cross-sections, or require flexible/collapsible forms for specific applications or installation challenges.
Improvements to the internal components and configurations of rolling element bearings, such as cage designs, separator materials, raceway geometry, or adjustable elements, to enhance performance or lifespan.
Actuators, control, and components for converting electrical energy into braking force, often involving motors, spindles, and friction elements, particularly for vehicle applications.
Design and integration of bearings within larger mechanical systems or devices, focusing on mounting structures, housing, endplay management, and overall assembly for specific applications.
Patents
Showing 1-2 of 2
Rolling Element Bearing Optimization